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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 12 — Jun. 17, 2013
  • pp: 14487–14499

Short-cavity multimode fiber-tip Fabry-Pérot sensors

Xuan Wu and Olav Solgaard  »View Author Affiliations


Optics Express, Vol. 21, Issue 12, pp. 14487-14499 (2013)
http://dx.doi.org/10.1364/OE.21.014487


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Abstract

We make the case for minimizing cavity length of extrinsic Fabry-Pérot (FP) cavities for use in fiber-tip sensors. Doing so mitigates multiple challenges that arise from using multimode fibers: mode averaging, phase uncertainty, amplitude reduction, and spectral modal noise. We explore these effects in detail using modal simulations, and construct pressure sensors based on this principle. We discuss the multimodal effects that we observe in our fiber sensors, and use simple filtering of the spectral signal to more easily measure pressure sensitivity. The concept of short-cavity FP interferometry is important for ensuring high quality and performance of multimode fiber sensors.

© 2013 OSA

OCIS Codes
(030.4070) Coherence and statistical optics : Modes
(050.2230) Diffraction and gratings : Fabry-Perot
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.5475) Instrumentation, measurement, and metrology : Pressure measurement

ToC Category:
Sensors

History
Original Manuscript: April 15, 2013
Revised Manuscript: May 21, 2013
Manuscript Accepted: June 2, 2013
Published: June 10, 2013

Citation
Xuan Wu and Olav Solgaard, "Short-cavity multimode fiber-tip Fabry-Pérot sensors," Opt. Express 21, 14487-14499 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-12-14487


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